ML2 Cisco Nexus MD: Remove unnecessary Cisco nexus DB

The nexus switch information is retrieved from a dictionary created
at initialization. The ML2 cisco credentials database in not needed.

Change-Id: I723293de9f2b821a011db2ad9176a945fef72ee0
Closes-Bug: 1284676
Switch over to FixedIntervalLoopingCall

LoopingCall has been renamed (without a change) to
FixedIntervalLoopingCall in https://review.openstack.org/#/c/26345/

Adjust to the new name so that the compatibility code can be removed.

Change-Id: I64f62dca5bee580dcd28860760208e9be8f4b659
Closes-Bug: #1307560
Add 'ip neigh' to ip_lib

This change adds 'ip neigh add' and 'ip neigh delete' as
Ip Device commands

Partially-Implements: blueprint neutron-ovs-dvr
Change-Id: I59428e2fe28c6a632c232b47cc46c097c281f253
netaddr<=0.7.10 raises ValueError instead of AddrFormatError

This patch ensures that ValueError is also caught in addition to
AddrFormatError as in netaddr>=0.7.11 AddrFormatError is raised and
in netaddr<=0.7.10 ValueError is raised.

Change-Id: I595c90e42129a2d365f3860e3042e826bd031365
Closes-bug: #1308675
Merge "Switch over to FixedIntervalLoopingCall"
Merge "netaddr<=0.7.10 raises ValueError instead of AddrFormatError"
Imported Translations from Transifex

Change-Id: Ica3d37f1b176233a75cd3a6fc2d6ff14859848e1
Merge "Add 'ip neigh' to ip_lib"
Merge "ML2 Cisco Nexus MD: Remove unnecessary Cisco nexus DB"
Merge "Imported Translations from Transifex"
netaddr<=0.7.10 raises ValueError instead of AddrFormatError

This patch is based on Aarons work for the Bug#1308675.
It ensures that ValueError is also caught in addition to
AddrFormatError as in netaddr>=0.7.11 AddrFormatError is raised and
in netaddr<=0.7.10 ValueError is raised.

Change-Id: I71cfe82e57290552fb22637ad929747a6fa22460
Closes-bug: #1308675
ofa_neutron_agent: Fix _phys_br_block_untranslated_traffic

Install the flow to the correct bridge.

Closes-Bug: 1301142
Change-Id: I2aa7ffd6bb297837a39cdd00794af100bf9ab407
ofagent: Fix VLAN usage for TYPE_FLAT and TYPE_VLAN

Closes-Bug: 1301144
Change-Id: I3df821fd72471f8bd84366e3b5a1cc7e3489156c
OFAgent: Process port_update notifications in the main agent loop

Port the following patch to OFAgent.
commit: 5e6e592132aa9a98936ce3bfdb66efc7832caafb
https://review.openstack.org/#/c/61964/

Partial-Bug: 1293265

Change-Id: I53813d12c66dc746cd373fd91ff9bd9bdbf222db
OFAgent: Improve handling of security group updates

Port the following patch to OFAgent.
commit: 3046c4ae22b10f9e4fa83a47bfe089554d4a4681
https://review.openstack.org/#/c/63100/

Partial-Bug: 1293265

Change-Id: Iecdfee894ff2fd5f05f63f040dd70821af124737
OFAgent implementation of l2-population

Basically, this patch ports from l2-population codes of OVS.
But use a ryu library instead of executing a ovs-vsctl command.
And this does not contain a function of local arp responder.
That will be provided by an another patch.

related commit: b6133c35dd587f6b01e8ec12757347b2767713a6

Implements: blueprint ofagent-l2pop

Change-Id: I99a2adfd380a9fefe34c53e0dabc21d8cf5936cc

Conflicts:
	neutron/plugins/ofagent/agent/ofa_neutron_agent.py
OFAgent: Avoid processing ports which are not yet ready

Port the following patch to OFAgent.
commit: 2702baed390d094b0eac07d0ae167ed236868d00
https://review.openstack.org/#/c/65838/

Closes-Bug: 1307745

Change-Id: Ie1fe0944fb541ba45ffb5b03747d5da289cede51
ofagent: Add a missing push_vlan action

Fix the flow for _provision_local_vlan_inbound_for_tunnel
to push-vlan explicitly.  While the old code happened to
work with older versions of OVS, it was spec-wise incorrect because
it failed to meet the prerequisite of the following set-field.
The latest version of OVS correctly rejects such a flow.

Closes-Bug: #1308927
Change-Id: I66221eec0cb4083d178d7d5651360ee1874e3d1b
OFAgent: Fixing lost vlan ids on interfaces

Port the following patch to OFAgent.
commit: 60cb0911712ad11688b4d09e5c01ac39c49f5aea
https://review.openstack.org/#/c/66375/

Closes-Bug: 1309286

Change-Id: I04f99ef7928cd07959b29eb64b5744df397979b8
ofagent: bye bye br-tun

WIP

Implements: blueprint ofagent-merge-bridges
Change-Id: I21ee1c6d141863182b487e10c7bfe911b1a472ab